Deer Hill Mineral: Amethyst & Quartz Rockhounding in Oxford County, Maine

Plan your visit

Generally open to casual rockhounding

County

Oxford County

State

Maine

Nearest road

Evergreen Valley Road

Postcode

04231

Coordinates

44.23130, -70.97991

Coordinates are approximate. Confirm the exact ground in the RockHoundR app, where land overlays show which agency manages the area.

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Best time to visit Deer Hill Mineral

Comfortable months (45 to 90°F highs)

Best months: April to November. Typical highs run 79°F in midsummer and 28°F in midwinter, with winter lows near 8°F.

Climate normals: NOAA 1991-2020 monthlies, BETHEL 6 SSE station (13 mi away).

Geology at Deer Hill Mineral

This spot sits on undifferentiated sedimentary rocks in areas of extreme migmatization, mapped as migmatite that formed roughly 445 to 360 million years ago. Metamorphic terrain like this typically carries quartz veins and sweats, and weathered crystals tend to end up in the soils and streams below.

Mapped unit

undifferentiated sedimentary rocks in areas of extreme migmatization

Age

445–360 Ma (Silurian to Devonian)

Rock types

migmatite

Elevation

710 ft

Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

State guidance last verified: April 1, 2026

• Maine Geological Survey
• Maine Mineral & Gem Museum
• Acadia National Park rules
• Community submissions reviewed against published agency rules